Add support for nested lambda expressions in rule conditions

[jonechenug]

I had use NRules.Language some little time . It is powerful !
But now I have a problem when using nested objects .Think you have a "Order" object , it has a list to store the detail item. Now I have a rule that when any item has some product , the order will had a discount .
The rule look like

Name "order rule smaple"
when
   var order= Order(x=>x.Items.Any(i=>i.Product.Name=="some product")); 
then 
    order.discount=1;

Unfortunately,it is not work.The erro message say " x.Items has not a member "Any" " . When I debuging,the Items only has its' index member. So the rule only support look like "x.Items[index].Product.Name=="some product"" .

[snikolayev]

You are right, nested lambdas are not yet supported. So this is a valid feature request. It's going to take a little while to add this feature, so meanwhile you can have a workaround - encapsulate the lambda expression behind an extension method on the Order object.

[harsh-chaturvedi]

@snikolayev Any updates on this? Support for nested lambda and execution of linq queries would be really helpful.